Publications by authors named "Aruna Kumar Mohanty"
Polymers containing cyclic derivatives are a new class of macromolecular topologies with unique properties. Herein, we report the synthesis of a triblock copolymer containing a spirocyclic mid-block. To achieve this, a spirocyclic polystyrene (cPS) mid-block was first synthesized by atom transfer radical polymerization (ATRP) using a tetra-functional initiator, followed by end-group azidation and a copper (I)-catalyzed azide-alkyne cycloaddition reaction.
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- Researchers developed new poly(ether sulfone) multiblock copolymers with phenolphthalein anilide structures, featuring pendant quaternary ammonium and imidazolium groups for use as anion exchange membranes (AEMs).
- The resulting AEMs displayed flexibility, mechanical strength, and robust thermal stability, alongside a unique phase-separated structure that enhanced conductivity while minimizing water uptake and swelling.
- In microbial fuel cell tests, these AEMs showcased a maximum power density of ~310 mW/m, outperforming commercial membranes like Nafion 117 and FAB-PK-130 by significant margins.
Redox-initiated reversible addition-fragmentation chain transfer (RAFT) miniemulsion polymerizations are successfully conducted with an employment of trithiocarbonate-based macro-RAFT agents and surfactant. Two macro-RAFT agents-hydrophilic poly(poly(ethylene glycol) methyl ether methacrylate) (PPEGMA ) and amphiphilic poly(poly(ethylene glycol) methyl ether methacrylate)-b-polystyrene (PPEGMA -b-PS )- are examined for the miniemulsion polymerization of styrene. The use of PPEGMA (in the presence of sodium dodecyl sulfate (SDS)) results in a slow polymerization rate with a broad particle size.
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